Missouri Pollen forecast Calendar

Missouri Pollen forecast Calendar

(based on 2015-2018 pollen data provided by the St. Louis County Department of Public Health)

Plants

Cedar/Juniper

Maple/Boxelder

Elm

Willow

Poplar/Cottonwood

Sycamore

Birch/Hop Hornbean

Oaks

Pine/spruce/

Alder

Ash

Walnut/Butternut

Grasses

Linden/Basswood

Pecan/Hickory

Sweetgum

Mulberry

Sedge

Dock/Sheep sorrel

Chestnut

Cattail

Plantain

Nettle

Ragweed

Lambsquarter

Hemp

Wormwood

Goldenrod

Jan

Very high level

High level

Moderate level

Feb

Mar Apr

May Jun

Tree/

shrub

Grass

Weed

1500 +

200+

500+

90-1499

20-199

50-499

15-85

5-19

10-49

Jul

Aug Sep

Oct

Nov Dec

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